Cat spa



FIG. 1 is a perspective view of the cat spa showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIGS. 4 and 5 are left and right side elevational views thereof respectively; and,

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a cat spa, as shown and described. 